Fashion designer Kimora Lee is pregnant with her fourth child and couldn’t be happier.

Sources told Page Six Kimora is four months pregnant with her first child with third husband, Goldman Sachs banker Tim Leissner.

Lee, 39, and Leissner married in February 2014 in a secret ceremony.

Kimora remains close friends with ex-husband Russell Simmons, with whom she has two daughters, Ming, 14, and Aoki, 12. Lee also has a five-year-old son, Kenzo, with actor Djimon Hounsou.

Kimora is a former model turned fashion designer who has her own perfume line, including Baby Phat Goddess.

Lee created the Baby Phat clothing and was CEO/Creative Director until 2010. She was hired as president/Creative Director of JustFab in 2011.

In 2011, Kimora’s dramatic 25-pound weight loss fueled rumors she was suffering from anorexia. Lee, who has two daughters, slammed the anorexia speculation, insisting she doesn’t believe in extreme diets.

In a message on her website April 15, 2011 (see post below), Kimora said she lost 25 pounds recently through a combination of diet and exercise — not through starvation. “It’s taken me almost a year to lose close to 25 pounds and I did it through healthy diet and exercise,” Simmons wrote.

“[A recent gossip] story led people to believe that I shed 25 pounds by not eating, which is completely ridiculous. I am a mother of three young children, two of whom are girls, and I’m trying to raise them with a healthy body image.”